Check the listing for details. AM Synthesized Signal Source Printed Circuit Board. Condition: New. Listed at 15.00 USD. The AWA AM Slider - A Synthesized Signal Source Please note that you are getting ONE board. The photos show 1) the front of the board 2) the back of the board 3) two boards in the same photo showing back and front and 4) a populated board. This is not a kit and you must purchase all of the components separately. A representative parts list is included. This offering is for the bare PCB only and additional components are required. We include a parts list, schematic and component layout. The AWA AM Slider is a low cost, synthesized signal source designed specifically for AWA’s Low Power AM Transmitter. It replaces the DIP oscillator on the transmitter assembly, providing a TTL level output signal that can be programmed to any frequency between 530 and 1710 KHz. It allows the AWA Low Power AM Transmitter to operate on frequencies below 1 MHz, in which range standard DIP oscillators are not readily available. Hobbyists who have already built the AWA Low Power AM Transmitter board can easily mount it to the AM Slider, and with a few soldered connections will be able to transmit on any of the AM broadcast frequencies. Changing the frequency of reference crystal will allow the AM Slider to generate frequencies in 9 KHz steps for use in Europe and Australia. When used with the AWA Low Power AM Transmitter, the AM Slider derives its DC power from the 9 volt wall power supply used to power the transmitter. The AM Slider can also be used in existing tube-type low power AM transmitters; in this standalone application a source of 5 volts DC derived from a 5.1 volt Zener diode in the oscillator cathode circuit can be used. The AM Slider is based on the Polk synthesized signal source, with a few modifications:  Use of HCMOS logic ICs to allow operation at 5 volt supply  Use of coded rotary switches to easily select the desired operating frequency  An on-board antenna tuning circuit to optimize antenna performance when used with the AWA Low Power AM transmitter  Designed to fit into a standard plastic case for protection of the circuit boards Additional information on this board can be found at the Antique Wireless Association website. Unfortunately our pricing structure does not allow us to offer discounts on multiple purchases or to combine shipping on this item. Please be aware that the postage fee that we charge covers not only the postage, but supplies and handling as well. International shipping is okay, but the postage will vary by location. Also postal regulations require this item to be shipped as a “package” and not an “envelope.” AWA SSS# 351 Copyright 2024 Antique Wireless Association